SB and BB haven't done anything donkish. SB should push with any two, right? What range would you call with being the bb? (with no reads)

Seat 5 is the button
Total number of players : 4
Seat 2: UTG ( $1898 )
Seat 5: BUTTON ( $1755 )
Seat 6: SB ( $1709 )
Seat 7: BB ( $2638 )
Trny:17267621 Level:7
Blinds(150/300)
** Dealing down cards **
Dealt to SB [ X X ]
UTG folds.
BUTTON folds.
SB is all-In [1559]

BB calls with?